Practice question · Numerical answer
One mole of a monatomic ideal gas has J/mol/K. Compute its in J/mol/K, using J/mol/K, to two decimal places.
Hints
- For an ideal gas the two heat capacities differ by R per mole.
- Compute 12.47 + 8.314.
Show the answer
20.79 (answers within ±0.05 count)
Why
J/mol/K. The extra is exactly the work the gas does expanding against constant pressure while being warmed.
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